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= 25² - 24²
= 625 - 576
1/2d2 = √49
1/2d2 = 7
d2 = 14 cm
= 48 cm : 2
= 24 cm
c = s
= 25 cm
a² + b² = c²
b² = c² - a²
b² = 25² - 24²
b² = 625 - 576
b² = 49
√b² = √49
b = 7
d₂ = b × 2
= 7 × 2
= 14 cm
Jadi panjang diagonal yang kedua adalah 14 cm.